US Patent 7690178 Lawn mower with grass striping mechanism

The lawn mower includes a vehicle body supporting front and rear wheels and a mower unit suspended from the vehicle body between the front and rear wheels by front and rear links. The links are movable to raise and lower the mower unit. A grass striping mechanism is associated with the vehicle body. The mechanism includes a stay arm connected to the mower unit and a roller support member movably connected to the stay arm so that the member is capable of movement in a vertical direction. A grass striping roller is rotationally supported by the roller support arm. A lift link is pivotally connected to the vehicle body and is associated with the roller support member. The lift link interfaces with the rear link such that upward movement of the rear link imparts movement to the lift link and roller support arm to lift the roller from the ground.